The remote host is missing an update to libhtml-parser-perl announced via advisory USN-855-1.

The problem can be corrected by upgrading your system to the following package versions: Ubuntu 6.06 LTS: libhtml-parser-perl 3.48-1ubuntu0.1 Ubuntu 8.04 LTS: libhtml-parser-perl 3.56-1ubuntu0.1 Ubuntu 8.10: libhtml-parser-perl 3.56-1ubuntu2.1 Ubuntu 9.04: libhtml-parser-perl 3.59-1ubuntu1.1 Ubuntu 9.10: libhtml-parser-perl 3.61-1ubuntu0.1 In general, a standard system upgrade is sufficient to effect the necessary changes. https://secure1.securityspace.com/smysecure/catid.html?in=USN-855-1

Mark Martinec discovered that HTML::Parser incorrectly handled strings with incomplete entities. An attacker could send specially crafted input to applications that use HTML::Parser and cause a denial of service.